This is a high quality compact prime lens with 50 mm focal length and f/1.4 aperture. This CCTV Lens features alloy casing with quality lens. It is ideal for use in bars shops parking lots houses and warehouse etc. It gives you the widest field of view image avaialble with a C mount lens. This CCTV Camera Lens provides ultra clear vision for your camera. Any in-camera crops would remove all vignetting for this lens. This len is a 50mm lens incorporates advanced optical elements to ensure all-around sharpness and efficient light conductivity. Solid metal mount lens adapter allows C Mount Movie Lens to be used on micro C-M4/3 camera body. Suitable for: With C-M4/3 adapter (included). Can mount on Camera: Panasonic G1 G2 G3 G10 GF1 GF2 GF3 GH1 GH2etc Olympus: E-P1 E-P2 E-P3 E-PL1 E-PL2 etc